Spring-mybtis整合过程详解

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一、创建完整包 下载地址：01MyBatis基础代码.zip-Web开发文档类资源-CSDN下载

二、开始整合

1、方式1

step1：导入相关坐标

<dependencies>
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.27</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.5.7</version></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-context --><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.3.13</version></dependency><!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.3.13</version></dependency><!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>2.0.6</version></dependency><!-- https://mvnrepository.com/artifact/com.alibaba/druid --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.2.8</version></dependency></dependencies>

step2:修改daoImpl中代码

修改serviceImpl中代码

step3:创建bean.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><context:property-placeholder location="db.properties"/><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/>
</bean><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/><property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean><bean id="categoryDao" class="com.woniuxy.dao.impl.CategoryDaoImpl"><property name="sqlsessionFactory" ref="sqlSessionFactory"/></bean><bean id="categoryService" class="com.woniuxy.service.impl.CategoryServiceImpl"><property name="categoryDao" ref="categoryDao"/></bean></beans>

 step4:编写测试代码

import com.woniuxy.model.Category;
import com.woniuxy.service.CategoryService;
import com.woniuxy.service.impl.CategoryServiceImpl;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;import java.util.List;public class TestCategoryService {private static CategoryService categoryService = new CategoryServiceImpl();public static void main(String[] args) {testFindAllCategories();}private static void testFindAllCategories() {ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:bean.xml");CategoryService categoryService = (CategoryServiceImpl)ac.getBean("categoryService");List<Category> categories = categoryService.findAllCategories();for(Category category : categories){System.out.println(category.getName());}}
}

step5:测试结果

 方式2：使用SqlSessionTemplate

基于以上代码

step1:修改daoImpl代码 注意：不需要提交commit()和close()的事务提交，因为spring容器已经帮你做了

 是step2:修改bean.xml

step3:测试代码和上面一致，结果如下

 

 3、方式3 基于以上代码修改

step1:修改daoImpl

 step2:修改bean.xml

 step3:测试代码一样，测试结果

 4、方式4 可利用MapperFactoryBean创建Mapper

基于以上代码

step1:修改daoImpl

step2:修改bean.xml

 step3:测试代码和测试结果同上

4、最终解决方案 基于以上代码

step1:

step2:修改bean.xml 

 step3:删除dao整个包

 step4:测试代码同上和测试结果

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